Immune system disorders

An allergy is an exaggerated immune response where the body mistakenly identifies an ordinarily harmless allergen as a threat. Allergic reactions give rise to allergic diseases such as hay fever, allergic conjunctivitis, allergic asthma, atopic dermatitis, food allergies, and anaphylaxis. Symptoms of allergic diseases may include red eyes, an itchy rash, sneezing, coughing, a runny nose, shortness of breath, or swelling.

medical condition involving extreme fatigue and a wide range of other symptoms

infection caused by pathogens that take advantage of an opportunity not normally available

medical effects of tumors besides mass effect

medical condition

human disease

Human disease

Mastocytosis, a type of mast cell disease, is a rare disorder affecting both children and adults caused by the accumulation of functionally defective mast cells (also called mastocytes) and CD34+ mast cell precursors.

rejection of transplanted tissue by the recipients immune system

esophagitis characterized by inflammation involving eosinophils located in esophagus

bodily reaction

thumb | right | alt=alt=Refer to caption | Electron microscopic image of a single human lymphocyte. Lymphocytopenia is the condition of having an abnormally low level of lymphocytes in the blood. Lymphocytes are a white blood cell with important functions in the immune system. It is also called lymphopenia. The opposite is lymphocytosis, which refers to an excessive level of lymphocytes.

illlnesses affecting Gulf War Vets

lymphoproliferative syndrome characterized by one or more enlarged lymph nodes containing cells with hyaline-vascular, plasmacytic, or mixed appearance microscopically

syndrome that is characterized by congenital hypoplasia of lymph vessels, which causes lymphedema of the legs and recurrent cholestasis in infancy, and slow progress to hepatic cirrhosis and giant cell hepatitis with fibrosis of the portal tracts

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Asplenia is the absence of normal spleen function and is associated with some serious infection risks. Hyposplenism is the condition of reduced ('hypo-'), but not absent, splenic functioning.

complication of anti-HIV treatment

group of mast cell disorders in which there is aberrant release of mast cell mediators

a disease of the immune system

systemic fibroinflammatory disease, associated with elevated serum IgG4 levels in about 70% of cases

Human disease

form of fasciitis, the inflammatory diseases that affect the fascia, the connective tissues surrounding muscles, blood vessels and nerves

allergic reaction in the mouth following eating food

dysgammaglobulinemia characterized by a deficiency of immunoglobulin A

hypersensitivity vasculitis that results in inflammation of small blood vessels, characterized clinically by palpable purpura, which is a slightly elevated purpuric rash over one or more areas of the skin

human disease

human disease

defense mechanism of tumors against immunity

hypersensitivity reaction type IV disease that results from a proliferation of cells producing immunoglobulin heavy chains

Human disease

human disease

response of biological tissue to foreign material

type of allergy caused by garlic